and have concerns about restoring the mailman.bak file. I can find no clear answers on how this would be accomplished. If I follow the instructions in the above mentioned link and it doesn't work out, how do I restore the .bak file?

sorry to appear to be a complete ass but, your guy emailed me again letting me know that none of the dirs on /usr are excessively full. only normal usage. So it would appear that the partition must be resized. Great. Looks like im 9% away from a server crash or whatever happens next.

Grabbing coffee now. Gonna sit back and watch the show. I'm clearly not going to be resizing any partitions with my skill set.